<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    let json={
        "name":"zhangsan",
        "age":23,
        "addr":["北京","上海","西安"]
    }
    //获取值
    alert(json.name)

</script>

</body>
</html>